Chapter 4 How to Set Up EDI for Ecommerce: A Practical Implementation Guide

What do you need before you set up EDI?

Document the process you want to automate before you look at any tooling. One partner, one workflow, written down.

Capture eight things:

1. The supplier or retail partner involved
2. The documents you will exchange
3. The direction each document travels
4. The system that creates the data
5. The system that receives it
6. The business rules and known exceptions
7. What success looks like in numbers
8. Who owns each step on your side

Start with one partner. A focused first connection teaches your team how to run EDI, and that knowledge is what makes the second and third connections fast.

What do you need from your trading partner?

Ask for their implementation guide. It is the specification your mapping and testing have to satisfy, and everything else follows from it.

From that document, confirm the EDI standard and version, the transaction types, the required segments and identifiers, the communication method, the acknowledgement expectations, the testing process, and the production cutover procedure. Also get names: a technical contact and a business contact, because you will need both.

Ask one question that partner guides often bury: what happens when a transaction is rejected, and who is responsible for correcting it.

What are the technical requirements for EDI?

You need a system that can produce and read the documents in your partner's required structure, and a connection that can move files securely.

On the standards side, our preferred version for inbound files is 004010VICS, with 004010 and 005010 also accepted. Partner specifications vary, and some integrations enforce stricter version requirements than the general parser does.

On the connection side, be specific early. Flxpoint EDI runs over SFTP and does not support AS2. Every account gets a dedicated SFTP account with an inbound directory for files coming to us and an outbound directory for files going back. If a trading partner's specification requires AS2, confirm compatibility before you commit to a timeline.

Delimiters, interchange identifiers, and control number conventions all get agreed at setup. They sound trivial until a file rejects because one side padded a field differently.

How does EDI mapping work?

Mapping connects the fields in your systems to the segments and elements your partner's guide requires. Your SKU, quantity, price, warehouse, and ship-to fields each need a defined destination.

Mapping is also where partner-specific rules live: which identifier qualifier goes in which position, which fields are mandatory for this partner even though the standard calls them optional, which date qualifiers apply. Treat the partner's implementation guide as the authority whenever it disagrees with the general standard.

Map every identifier a partner requires before go-live. The alternative is what we see repeatedly in invoice rejections: one unmapped SKU passes through unchanged, stops matching the purchase order line, and produces a backlog of rejected invoices that has to be corrected and resent.

How should you test an EDI integration?

Test the whole business workflow, not just whether a file transmits successfully. A file that arrives and parses can still update the wrong record.

Work through five layers:

• Connection. Can both sides deposit and collect files reliably?
• Each document type. Test inbound and outbound separately.
• Acknowledgements. Confirm the 997 round trip works in both directions.
• Business accuracy. Check that quantities, prices, identifiers, and addresses land in the right fields in the receiving system.
• Exceptions. Deliberately send a rejected line, a short quantity, and a bad identifier, and watch what happens.

That last one gets skipped and it is the one that matters. You will spend more of your operational life on exceptions than on clean transactions.

Before sending files to a partner, validate them. Our EDI validator checks a file against the specification and, for the 856 and 810, cross-checks it against the original 850 so mismatched purchase order numbers, identifiers, and quantities surface before the partner rejects them.

What happens after go-live?

Monitor transaction status, missing acknowledgements, rejected documents, and the business outcomes behind them. A connection that transmits perfectly while updating the wrong SKUs is still broken.

Name owners for four jobs: investigating rejected files, updating mappings, handling partner specification changes, and running the fallback process when a connection or system is unavailable. Partners do change their requirements, usually with notice you will miss if nobody is watching for it.

What if your supplier has no existing integration?

Check three options in order, because most suppliers do not need custom development.

First, see whether the supplier can use a connection we already support. Second, consider whether a different method fits them better, since plenty of suppliers work more comfortably with a file feed, an API, or a vendor portal than with EDI. Third, scope a custom EDI or API integration if the relationship justifies it.

A supplier who cannot meet an EDI specification is not a dead end. It usually means EDI is the wrong connection method for that particular partner, which is a normal outcome in a mixed supplier base.

What should you do next?

Work through the EDI implementation checklist before your kickoff call. For the document-level detail behind each transaction, see EDI transaction codes. If your setup involves an ERP, start with our NetSuite integration, and for connecting suppliers generally, see dropship vendor integration.

Frequently asked questions

How long does EDI implementation take?
There is no standard timeline. It depends on the number of partners and documents, how clean your source data is, how responsive the partner's EDI team is, and how long their certification process takes. Some partners also have provisioning lead times of several business days before testing can even begin.

What is an EDI implementation guide?
It is your trading partner's technical specification: which documents they exchange, which segments and elements they require, which identifiers and qualifiers to use, how files should be transmitted, and how testing and cutover work. It is the source of truth for that relationship.

Do I need an EDI provider?
Not necessarily, but you need the capability. Translation, mapping, connection management, monitoring, exception handling, and keeping up with partner changes all have to be owned by somebody, whether that is your team or a service.

Which document should I automate first?
Whichever one is costing you the most manual work. For most ecommerce operations that is inventory or purchase orders, because those run at the highest frequency.

Can I run EDI without an ERP?
Yes. EDI connects trading partners, and it can connect to an ecommerce platform, an order management system, or an ERP. The ERP question is about where your business records live, not about whether EDI will work.